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<table width="100%" summary="page for USPop"><tr><td>USPop</td><td align="right">R Documentation</td></tr></table>

<h2>Population of the United States</h2>

<h3>Description</h3>


<p>The <code>USPop</code> data frame has 22 rows and 1 columns.
This is a decennial time-series, from 1790 to 2000.
</p>


<h3>Usage</h3>

<pre>
USPop
</pre>


<h3>Format</h3>


<p>This data frame contains the following columns:
</p>

<dl>
<dt>year</dt><dd>
<p>census year.
</p>
</dd>
<dt>population</dt><dd>
<p>Population in millions.
</p>
</dd>
</dl>



<h3>Source</h3>


<p>U.S.~Census Bureau: <a href="http://www.census-charts.com/Population/pop-us-1790-2000.html">http://www.census-charts.com/Population/pop-us-1790-2000.html</a>, downloaded 1 May 2008.
</p>


<h3>References</h3>


<p>Fox, J. (2008)
<EM>Applied Regression Analysis and Generalized Linear Models</EM>,
Second Edition. Sage.  
</p>


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